AGRONOMY PROGRESS REPORT

2016 CALIFORNIA ALFALFA VARIETY TRIAL RESULTS

Chris DeBen, Francisco Maciel, Steve Orloff, Darrin Culp, Dale Pattigan, Daniel H. Putnam1

ABSTRACT This publication details alfalfa yield trial data for multiple-year, single harvest, and single year summaries for the year 2016. Both conventional and Roundup-Ready (RR) lines have been tested. Yield trials were conducted in 5 regions in California: the Intermountain area (Tulelake), the Sacramento Valley (Davis), the San Joaquin Valley (Modesto, Parlier, and Five Points) and the Imperial Valley (El Centro). The alfalfa variety trial data from the University of California is placed online; often well in advance of this published report (http://alfalfa.ucdavis.edu/).

INTRODUCTION Choosing superior varieties of alfalfa is a significant economic factor for alfalfa growers. A large number of commercial varieties are currently available, enabling wide range of options. These UC trials provide unbiased data from a wide range of environments related to variety performance of alfalfa. In California, alfalfa is grown from the Oregon border to the Mexican border, and throughout the Great Central Valley, which consists of the Sacramento and San Joaquin Valleys (Figure 1). These sites represent 3-4 cut systems (dormant varieties) in the Intermountain Region, 6-8 cut systems (dormant, semi-dormant, or non-dormant 90% varieties) in the Northern Central Valley, 7-8 cut systems (semi-dormant to non-dormant varieties) in the Southern Central Valley and 8-11 cut systems (non-dormant varieties) in the Low Desert Environment in the south.

1 D. Putnam, Extension Agronomist UC Davis (One Shields Ave., Department of Crop Sciences, University of California, Davis, CA 95616 (dhputnam@ucdavis.edu); Chris DeBen, Staff Research Associate, UC Davis, cmdeben@ucdavis.edu; F. Maciel, SRA, El Centro; Steve Orloff, UCCE Farm Advisor, Siskiyou and Modoc Counties, Darrin Culp, Ag. Superintendent, Tulelake; D. Pattigan, SRA, Kearney Research & Extension Center, SRA. See http://alfalfa.ucdavis.edu for comprehensive UC Alfalfa Variety data.

AGRONOMY PROGRESS REPORT Agricultural Experiment Station Cooperative Extension

Department of Plant Sciences One Shields Ave.

UC Davis, Davis, CA 95616-8780 December 2016 • No. 323

Figure 1. California alfalfa acreage. The Intermountain region is represented by Tulelake and Scott Valley, Sacramento Valley by Davis, San Joaquin Valley by Modesto, Parlier and Five Points Locations, and Low Desert by the El Centro trial.

Both private and public varieties and experimental lines are tested. These data are frequently used by growers to choose varieties, and by breeders to help guide further selection. We test both private and public varieties, and experimental lines destined for release within the next few years. This report provides single year and over-the-year summary from alfalfa trials harvested in California in 2016.

Figure 2. Progression of California drought, 2014-2016. Darkest red = ‘Exceptional Drought’, red = ‘Extreme Drought’, Orange = ‘Severe Drought’ and lighter yellows are ‘Moderate Drought to Abnormally Dry’. Source: US Drought Monitor: USDGS, National Drought Mitigation Center, Lincoln, NE. USDA, NOAA.

2016 ALFALFA PRODUCTION YEAR With California’s continuing drought conditions, there are increased water limitations in most regions due to low water supplies for irrigation. Figure 2 shows the drought conditions which prevailed during most of this testing period, and have been mitigated to some degree in late 2016, but still continue at this writing. Many alfalfa growers stopped watering their crops mid-season in 2014, 2015 and 2016. Since all of the CA alfalfa sites are conducted with irrigation, this did not largely affect the yields reported here (we have conducted deficit irrigation trials which are reported elsewhere). While temperatures remained relatively seasonal during the production season, early rained-on hay was experienced by many in the Central Valley in 2016. The price of alfalfa hay plummeted in 2015-16 compared with the previous two years, and remained low for much of 2016. Lower quality hays were especially affected. Exports, however, increased substantially in 2016 compared with previous years. NASS reports an increase in alfalfa production in 2016 compared to the previous year. A weak domestic dairy profitability combined with oversupply of lower-quality hays and low commodity prices were important. These factors resulted in lower prices in hay than was experienced in previous years. Other than the ongoing drought conditions, seasonal temperatures were relatively normal.

December 30, 2014 December 29, 2015 December 27, 2016

TESTING ALFALFA VARIETIES - METHODS

Yield Trials. The California Alfalfa Cultivar Yield, Fall Dormancy, and Forage Quality Trials are open to any certified alfalfa cultivar, which is sold or is likely to be sold in California. Blends or brands (unless they are certified blends) are not included in these trials. Experimental cultivars with a high likelihood of release within the next few years are tested as space permits. In the fall of 2016 two new trials were established: a new El Centro trial was planted on 10/19/16, and Tulelake trial was planted on 9/23/16. There was an unseasonable cold spell in early September which destroyed the new stand of alfalfa at Tulelake. A replant is scheduled for spring 2017 in Tulelake. Also, planned for early 2017 is a drip-irrigated salinity trial at Westside Field Station. Six alfalfa variety yield trials were harvested at Tulelake, Davis, Modesto, Parlier, Five Points and El Centro, CA in 2016. Specific planting dates for each trial are given on the results table for each trial. The plantings were at approximately 25 lbs/acre live seed. Plots were 3' to 4' wide and 13 to 20 feet long, depending upon location and specific layout. Four to six replicates of each cultivar were planted at each location, depending upon the expected variation at that site. Experimental design was a randomized complete block design. Harvests for yield estimation were obtained from approximately a 3' x 18' area per plot using a flail-type or cutter-bar type forage harvester, and dry matter yield determined by oven-drying subsamples to a constant weight. A representative group of 5-6 varieties were taken at each harvest, and the average dry matter used for yield determination. Three to four harvests were taken in the intermountain region, while up to nine cuttings were taken in the Imperial Valley. Cutting schedules were determined by the most common practice in that region and are the same for all varieties within a trial. The data is obtained from each of the locations and analyzed and summarized at the UC Davis campus. Note on Statistical Inference: Since 2006, we have elected to analyze and report significance of variety testing data (calculation of F-test and LSD Values) based upon a probability value of 10% vs. the traditional 5%. In doing so, we are accepting a 90% confidence level vs. a 95% confidence level. This is due to the fact that growers routinely base decisions based upon degrees of confidence that are far lower that 95% confidence levels than is commonly used. A 10% probability level (the probability that the declared difference is based solely upon chance) is sufficiently conservative to prevent choosing varieties based upon false differences but yet represents good mean separation. Such decisions are always a compromise between practical factors and statistical vigor.

2016 YIELD RESULTS

Intermountain Region 2013 UC Tulelake Yield Trial -- – This trial was planted with 42 entries on August 21, 2013. Four cuttings were taken during the 2016 season with the first cutting taking place on June 8, 2016. Single year results from the 2016 harvests are provided in Table 1. The average yield across all varieties was 6.9 tons/acre. The yearly yield averages between high and low varieties varied by approximately one ton or about 15% of the lowest yielding line. Yields averaged over the three-year trial were a little over 8.2 tons/acre (Table 2). The across-the-years yield average

between high and low varieties varied 1.4 tons/acre. The CVs were relatively low, indicating control of varieties was stable over each cut in this trial. Also, included in this trial were plots inoculated with 4 seed treatment combinations using alfalfa variety Integra8420. These treatments include: Optimize Gold Plus (OGP), Rhizobia with an LCO promoter; an isoflavinoid (EM-09009); and Quick Roots (QR), a microbial seed inoculant.

Sacramento Valley Region 2014 UC Davis Yield Trial– This trial was planted with 36 entries September 9, 2014 in the U.C. Davis research fields. This trial was conducted with subsurface drip irrigation. Six cuttings were taken during the 2016 season with the first cutting of the season on April 6, 2016 (Table 3). The yield average for all varieties was 7.3 tons/acre over 6 cuttings. The October cutting was not recorded, and is estimated to be approximately 1.0 tons/acre average yield. The yearly yield average between high and low varieties had a 1.6 tons/acre spread. The CVs were moderate, indicating control of varieties was stable over each cut in this trial. The two-year summary is provided in Table 4.

San Joaquin Valley Region

2014 UC Modesto Yield Trial-- Trial was planted with 36 entries October 9, 2014 at the Stanislaus Farm Supply research fields in Modesto, CA. Reported here is the second year for the Stanislaus Yield Trial (Table 5). Harvests were taken by Stan Farm Supply staff, but yields were coded so that only UC personnel were able to access. Eight cuttings were taken during the 2016 season with the first cutting on March 29, 2015. The average yield across all varieties was 14 tons/acre. The yearly yield averages between high and low varieties showed a 6 tons/acre difference, or 42% of the mean. The fall dormancy ranges were from 5-10 in this trial. The two-year summary is provided in Table 6. 2013 UC Kearney Yield Trial – This is the final year of yield data for the Kearney Trial located at Parlier, CA. Eight cuttings were conducted during the 2016 season with the first cutting taking place on April 13. Single year results from the 2016 harvests are provided in Table 7. The average yield across all varieties was slightly over 12 tons/acre. The yearly yield averages between high and low varieties were 3.3 tons/acre difference. The fall dormancy ranges were from 7-10. The yield summary of 3 years of production (Table 8) show differences from highest to lowest yielding variety were 3.0 tons/acre. The average yield across all varieties was 12.2 tons/acre. Also, included in this trial were plots inoculated with 4 seed treatment combinations using alfalfa variety Catalina. These treatments include: Optimize Gold Plus (OGP), Rhizobia with an LCO promoter; an isoflavinoid (EM-09009); and Quick Roots (QR), a microbial seed inoculant. 2014 UC Westside Salinity Yield Trial – This variety trial was established October 9, 2014 with 36 varieties in 5 replications at the West Side Research and Extension Center, Five Points, CA. This includes proper controls (salt tolerant and salt susceptible lines developed for greenhouse screening by seed companies). Tables 9-10 present the yields per cut, and season total of low and high-salinity treatments. Table 11 shows the relative yield of varieties grown under low-

salinity conditions compared to high-salinity (EC 9-11). Data show a quite low yield penalty, around 1.0 t/A, suggesting alfalfa as a crop is tolerant of high-saline conditions. Very high CV% must be taken into consideration. We have less confidence in differences with varieties, and hypothesize these differences had more to do with the inability to provide sufficient water uniformity across a small trial. A future salinity tolerance trial is planned for early 2017, with plans to use subsurface drip irrigation (SDI) to supply water more uniformly.

Low Desert Region 2016 New Planting – A new alfalfa yield trial was established on October 19, 2016 at the Desert Research and Extension Center in Holtville, CA. The trial includes 30 entries with 6 replications.

INTERPRETING YIELD TRIAL RESULTS We suggest the following procedure for selecting varieties:

1. Select a group of high-yielding varieties for your region (generally the top ¼ to 1/3 of a trial which is closest to your area) from Tables 1-9 over-the year’s summaries (or from our website). Since this report contains single-year summaries, we recommend that you see the over-the years summaries from the relevant locations which is on our website: http://alfalfa.ucdavis.edu

2. Determine the Pest Resistance and Fall Dormancy needs for your region. The FD scores are provided on these tables and in the Alfalfa Alliance Website (see #3).

3. Consider the Fall Dormancy and Pest resistance Ratings of individual varieties – available at the Alfalfa Alliance Website (www.alfalfa.org).

4. Choose those high yielding varieties with the best Pest Resistance package for your region.

5. Consider evidence for high quality if available (such information is not always widely available, but generally more dormant varieties tend to be higher in quality).

6. Consider Biotech Traits such as the Glyphosate-Resistance. This should be compared as a comprehensive weed control strategy, not just a variety.

7. Test a variety on portions of your farm to see how it does under your soil conditions. 8. Consider the price of seed, availability and Service.

ACKNOWLEDGMENTS

The authors are grateful for the help of Dale Pattigan and staff for help with the field plots at UC Kearney Ag Center, Rafael Solorio and crew for help with the field plots at Westside Research and Extension Center, Rob Wilson’s crew at the Intermountain Research and Extension Center, Paul McCormick at the Stanislaus Farms facility, Francisco Maciel’s crew at the Desert Research and Extension Center, and Jim Jackson for help on the U.C. Davis plots. In accordance with applicable State and Federal laws and University policy, the University of California does not discriminate in any of its policies, procedures, or practices on the basis of race, religion, color, national origin, sex, marital status, sexual orientation, age, veteran status, medical condition, or handicap. Inquiries regarding this policy may be addressed to the Affirmative Action Director, University of California, Agriculture and Natural Resources, 300 Lakeside Drive, 6th Floor, Oakland, CA 94612-3560. (415) 987-0097. University of California and United States Department of Agriculture Cooperating.

Table. 1. 2016 YIELDS, TULELAKE ALFALFA CULTIVAR TRIAL. TRIAL PLANTED 8/21/13Note: Single year data should not be used to evaluate alfalfa varieties or choose alfalfa cultivars

% ofVERNAL

FDReleased VarietiesIntegra 8401RR 4 2.43 1) ( 2.13 2) ( 1.42 5) ( 1.48 9) ( 7.46 1) ( A 108.4Integra 8420 (EM) 4 2.36 3) ( 2.01 16) ( 1.42 4) ( 1.56 2) ( 7.36 2) ( A B 106.8Integra 8420 (OGP) 4 2.35 4) ( 1.97 25) ( 1.41 6) ( 1.56 1) ( 7.29 3) ( A B C 105.9Archer III 5 2.33 7) ( 2.09 3) ( 1.28 33) ( 1.48 10) ( 7.17 6) ( A B C D E 104.2 Trophy 4 2.35 5) ( 1.99 21) ( 1.23 37) ( 1.52 5) ( 7.09 7) ( A B C D E F 103.0RR NemaStar 4 2.12 31) ( 2.05 9) ( 1.44 3) ( 1.45 17) ( 7.06 8) ( A B C D E F G 102.6Integra 8420 (OGP+EM) 4 2.25 12) ( 1.93 34) ( 1.40 9) ( 1.46 16) ( 7.04 9) ( B C D E F G H 102.3AmeriStand 455TQ RR 4 2.15 27) ( 2.15 1) ( 1.46 1) ( 1.27 40) ( 7.03 10) ( B C D E F G H 102.0Integra 8400 4 2.09 34) ( 2.06 6) ( 1.32 25) ( 1.56 3) ( 7.02 11) ( B C D E F G H 102.0Nimbus 5 2.13 28) ( 2.03 11) ( 1.36 16) ( 1.47 13) ( 6.99 12) ( B C D E F G H I 101.66516R 5 2.22 16) ( 2.05 7) ( 1.40 7) ( 1.31 33) ( 6.98 14) ( B C D E F G H I 101.4Integra 8444RR 4 2.21 18) ( 2.01 18) ( 1.36 19) ( 1.40 24) ( 6.98 15) ( B C D E F G H I 101.3DG 4210 4 2.15 25) ( 2.03 12) ( 1.44 2) ( 1.33 29) ( 6.95 16) ( B C D E F G H I 101.0Mutiny 4 2.18 21) ( 1.96 27) ( 1.40 8) ( 1.41 21) ( 6.95 17) ( B C D E F G H I 101.0WL 363HQ 5 2.17 22) ( 2.02 15) ( 1.33 22) ( 1.44 18) ( 6.95 18) ( B C D E F G H I 100.96401N 4 2.16 23) ( 1.94 30) ( 1.36 17) ( 1.47 12) ( 6.94 20) ( C D E F G H I 100.8Integra 8420 4 2.21 17) ( 1.88 40) ( 1.38 12) ( 1.47 14) ( 6.94 21) ( C D E F G H I 100.8Integra 8420 (QR) 4 2.16 24) ( 1.90 39) ( 1.37 13) ( 1.48 11) ( 6.91 22) ( C D E F G H I J 100.4Vernal 2 2.25 13) ( 1.98 23) ( 1.24 36) ( 1.41 22) ( 6.89 23) ( C D E F G H I J 100.0DKA43-22RR 4 2.20 20) ( 2.04 10) ( 1.32 24) ( 1.32 32) ( 6.87 24) ( D E F G H I J 99.8 Rhino 4 2.32 9) ( 1.93 33) ( 1.20 41) ( 1.42 20) ( 6.87 25) ( D E F G H I J K 99.7WL 354HQ 4 2.25 14) ( 1.95 29) ( 1.31 27) ( 1.35 28) ( 6.86 26) ( D E F G H I J K 99.6AmeriStand 415NT RR 4 2.10 33) ( 2.02 14) ( 1.32 23) ( 1.40 23) ( 6.85 27) ( D E F G H I J K 99.5Camas 4 2.13 29) ( 1.92 36) ( 1.39 10) ( 1.40 25) ( 6.85 28) ( D E F G H I J K 99.46547R 4 2.12 30) ( 2.02 13) ( 1.37 14) ( 1.33 30) ( 6.84 30) ( D E F G H I J K 99.3DKA44-16RR 4 2.21 19) ( 2.01 19) ( 1.29 30) ( 1.30 35) ( 6.81 31) ( D E F G H I J K 98.9AmeriStand 427 4 2.24 15) ( 1.97 24) ( 1.28 32) ( 1.29 36) ( 6.79 32) ( E F G H I J K 98.66585Q 5 1.98 41) ( 1.92 38) ( 1.35 20) ( 1.46 15) ( 6.71 33) ( F G H I J K 97.56422Q 4 2.08 35) ( 1.98 22) ( 1.30 29) ( 1.32 31) ( 6.68 35) ( F G H I J K 97.0AmeriStand 445NT 4 2.10 32) ( 1.95 28) ( 1.23 38) ( 1.40 26) ( 6.68 36) ( F G H I J K 97.0RR Tonnica 5 2.03 40) ( 1.99 20) ( 1.36 18) ( 1.29 37) ( 6.67 37) ( G H I J K 96.86497R 4 2.15 26) ( 1.87 42) ( 1.32 26) ( 1.31 34) ( 6.65 38) ( H I J K 96.6WL 372HQ.RR 4 2.04 39) ( 1.96 26) ( 1.36 15) ( 1.27 41) ( 6.64 39) ( H I J K 96.4Masterpiece II 4 2.05 36) ( 1.92 37) ( 1.21 39) ( 1.43 19) ( 6.61 40) ( I J K 96.0

Experimental VarietiesFG 49W201 5 2.27 11) ( 2.07 4) ( 1.39 11) ( 1.49 8) ( 7.22 4) ( A B C D 104.8SW4332 4 2.33 8) ( 2.07 5) ( 1.29 31) ( 1.53 4) ( 7.21 5) ( A B C D 104.8 SW4351 4 2.36 2) ( 1.93 35) ( 1.20 40) ( 1.51 6) ( 6.99 13) ( B C D E F G H I 101.6FG R49W215 4 2.34 6) ( 2.05 8) ( 1.28 34) ( 1.28 39) ( 6.95 19) ( B C D E F G H I 100.9 SW4328 4 2.04 38) ( 2.01 17) ( 1.31 28) ( 1.49 7) ( 6.85 29) ( D E F G H I J K 99.4FG 49W202 5 2.04 37) ( 1.94 31) ( 1.33 21) ( 1.39 27) ( 6.70 34) ( F G H I J K 97.2 SW3304 3 2.31 10) ( 1.87 41) ( 1.19 42) ( 1.13 42) ( 6.51 41) ( J K 94.5FG R57OK217 5 1.97 42) ( 1.94 32) ( 1.27 35) ( 1.28 38) ( 6.46 42) ( K 93.8

MEANCVLSD (0.1)

Trial seeded at 25 lb/acre viable seed at Intermountain Research and Extension Center, Tulelake, CA.Entries follow ed by the same letter are not signif icantly different at the 10% probability level according to Fisher's (protected) LSD.FD = Fall Dormancy reported by seed companies. Also, included in this trial w ere plots inoculated w ith 4 seed treatment combinations using alfalfavariety Integra8420. These treatments include: Optimize Gold Plus (OGP), Rhizobia w ith an LCO promoter; An isoflavinoid (EM-09009); and Quick Roots (QR), a microbial seed inoculant.

8.380.14

6.915.000.41

8.060.21

1.996.25NS

1.336.850.11

28-SepCut 4

TOTALYEAR

Dry t/a

2.19 1.40

8-JunCut 1

12-JulCut 2

9-AugCut 3

Table 2. 2014-2016 YIELDS, TULELAKE ALFALFA CULTIVAR TRIAL. TRIAL PLANTED 8/21/13

FDReleased VarietiesIntegra 8420 (EM) 4 10.06 4) ( 8.55 6) ( 7.36 2) ( 8.65 1) ( AAmeriStand 455TQ RR 4 9.99 8) ( 8.69 2) ( 7.03 10) ( 8.57 3) ( A B CArcher III 5 10.04 5) ( 8.48 7) ( 7.17 6) ( 8.56 4) ( A B CIntegra 8400 4 9.93 10) ( 8.55 5) ( 7.02 11) ( 8.50 7) ( A B C D E FWL 363HQ 5 10.03 6) ( 8.47 8) ( 6.95 18) ( 8.48 8) ( A B C D E F GMasterpiece II 4 10.33 1) ( 8.45 10) ( 6.61 40) ( 8.46 9) ( A B C D E F G HIntegra 8420 (OGP) 4 9.93 9) ( 8.14 24) ( 7.29 3) ( 8.45 10) ( A B C D E F G HIntegra 8401RR 4 9.62 24) ( 8.22 18) ( 7.46 1) ( 8.43 11) ( A B C D E F G H IRR NemaStar 4 10.01 7) ( 8.21 20) ( 7.06 8) ( 8.43 12) ( A B C D E F G H I JDG 4210 4 9.67 22) ( 8.65 3) ( 6.95 16) ( 8.42 13) ( A B C D E F G H I JMutiny 4 9.55 30) ( 8.60 4) ( 6.95 17) ( 8.37 14) ( B C D E F G H I J K6401N 4 9.79 15) ( 8.21 19) ( 6.94 20) ( 8.31 16) ( B C D E F G H I J K L6547R 4 9.68 21) ( 8.36 11) ( 6.84 30) ( 8.29 17) ( C D E F G H I J K L M Trophy 4 9.68 20) ( 8.04 32) ( 7.09 7) ( 8.27 18) ( D E F G H I J K L M NWL 354HQ 4 9.61 25) ( 8.32 13) ( 6.86 26) ( 8.26 20) ( D E F G H I J K L M N6422Q 4 9.90 11) ( 8.20 21) ( 6.68 35) ( 8.26 21) ( E F G H I J K L M NDKA44-16RR 4 9.71 19) ( 8.26 16) ( 6.81 31) ( 8.26 22) ( E F G H I J K L M N6516R 5 9.59 26) ( 8.16 23) ( 6.98 14) ( 8.24 23) ( E F G H I J K L M N6585Q 5 9.73 18) ( 8.28 14) ( 6.71 33) ( 8.24 24) ( F G H I J K L M NNimbus 5 9.66 23) ( 8.05 31) ( 6.99 12) ( 8.23 25) ( F G H I J K L M NIntegra 8444RR 4 9.57 28) ( 8.08 29) ( 6.98 15) ( 8.21 26) ( G H I J K L M N OWL 372HQ.RR 4 9.74 17) ( 8.12 26) ( 6.64 39) ( 8.17 28) ( I J K L M N OIntegra 8420 (OGP+EM) 4 9.47 33) ( 7.99 36) ( 7.04 9) ( 8.17 29) ( I J K L M N ORR Tonnica 5 9.58 27) ( 8.23 17) ( 6.67 37) ( 8.16 30) ( I J K L M N OCamas 4 9.35 38) ( 8.26 15) ( 6.85 28) ( 8.15 31) ( J K L M N OAmeriStand 415NT RR 4 9.45 34) ( 8.14 25) ( 6.85 27) ( 8.15 32) ( K L M N O Rhino 4 9.43 36) ( 8.10 27) ( 6.87 25) ( 8.13 33) ( K L M N OIntegra 8420 (QR) 4 9.56 29) ( 7.86 39) ( 6.91 22) ( 8.11 34) ( K L M N OAmeriStand 445NT 4 9.55 31) ( 8.08 28) ( 6.68 36) ( 8.10 35) ( K L M N OIntegra 8420 4 9.43 35) ( 7.89 38) ( 6.94 21) ( 8.09 36) ( L M N O6497R 4 9.50 32) ( 8.03 34) ( 6.65 38) ( 8.06 37) ( L M N ODKA43-22RR 4 9.18 41) ( 8.03 33) ( 6.87 24) ( 8.03 38) ( M N OVernal 2 9.27 39) ( 7.85 40) ( 6.89 23) ( 8.00 39) ( N OAmeriStand 427 4 9.25 40) ( 7.82 41) ( 6.79 32) ( 7.95 40) ( O

Experimental VarietiesFG 49W202 5 10.28 2) ( 8.73 1) ( 6.70 34) ( 8.57 2) ( A BSW4332 4 10.07 3) ( 8.33 12) ( 7.21 5) ( 8.54 5) ( A B C DFG 49W201 5 9.88 12) ( 8.45 9) ( 7.22 4) ( 8.52 6) ( A B C D E SW4351 4 9.80 14) ( 8.19 22) ( 6.99 13) ( 8.33 15) ( B C D E F G H I J K L SW4328 4 9.88 13) ( 8.08 30) ( 6.85 29) ( 8.27 19) ( D E F G H I J K L M NFG R49W215 4 9.75 16) ( 7.90 37) ( 6.95 19) ( 8.20 27) ( H I J K L M N OFG R57OK217 5 9.36 37) ( 8.02 35) ( 6.46 42) ( 7.94 41) ( O SW3304 3 7.97 42) ( 7.29 42) ( 6.51 41) ( 7.26 42) (

MEANCVLSD (0.1)

Trial seeded at 25 lb/acre viable seed at Intermountain Research and Extension Center, Tulelake, CA.Entries follow ed by the same letter are not signif icantly different at the 10% probability level according to Fisher's (protected) LSD.FD = Fall Dormancy reported by seed companies. Also, included in this trial w ere plots inoculated w ith 4 seed treatment combinations using alfalfa variety Integra8420. These treatments include: Optimize Gold Plus (OGP), Rhizobia w ith an LCO promoter; An isoflavinoid (EM-09009); and Quick Roots (QR), a microbial seed inoculant.

4.47

2016

0.51 0.44 0.41 0.28

Yield

6.91 8.26

Yield

4.44 5.00

AverageDry t/a

9.66 8.202.82

2014Yield

2015

Table 3. 2016 Yields, UC Davis Alfalfa Cultivar Trial (Trial planted Sept. 30, 2014)Note: Single year data should not be used to evaluate alfalfa varieties or choose alfalfa cultivars. OCTOBER CUTTING NOT RECORDED (Historical Oct. yield averages approximately 1 t/A).

% ofCUF 101

FDReleased VarietiesUC Impalo 8 0.59 3) ( 1.26 1) ( 1.22 14) ( 1.60 4) ( 1.50 3) ( 1.82 4) ( 7.99 1) ( A 114.6DG9212 9 0.50 28) ( 1.08 10) ( 1.29 4) ( 1.52 10) ( 1.47 5) ( 1.83 1) ( 7.69 2) ( A B 110.2Desert Sun 8.10 RR 8 0.53 14) ( 1.02 21) ( 1.19 23) ( 1.60 4) ( 1.51 1) ( 1.83 1) ( 7.68 3) ( A B 110.1Camas 4 0.51 24) ( 1.08 9) ( 1.29 4) ( 1.69 1) ( 1.46 7) ( 1.59 26) ( 7.62 5) ( A B C 109.2AmeriStand 715NT RR 7 0.48 33) ( 1.08 10) ( 1.25 11) ( 1.62 3) ( 1.46 7) ( 1.72 13) ( 7.60 6) ( A B C D 109.0SW9215 9 0.58 5) ( 1.10 7) ( 1.22 14) ( 1.52 10) ( 1.34 23) ( 1.82 3) ( 7.57 9) ( A B C D E F 108.5AmeriStand 803T 8 0.57 7) ( 1.10 7) ( 1.28 8) ( 1.45 20) ( 1.38 18) ( 1.73 10) ( 7.50 11) ( A B C D E F G 107.5Integra 8420 4 0.53 14) ( 1.11 4) ( 1.28 8) ( 1.60 4) ( 1.35 21) ( 1.62 22) ( 7.50 12) ( A B C D E F G 107.5Pacif ico 8 0.51 24) ( 1.00 26) ( 1.32 2) ( 1.48 15) ( 1.35 22) ( 1.73 12) ( 7.39 13) ( A B C D E F G H 105.98R100 8 0.52 20) ( 1.03 17) ( 1.11 31) ( 1.43 23) ( 1.48 4) ( 1.82 4) ( 7.39 14) ( A B C D E F G H 105.9Arriba II 6 0.53 14) ( 1.11 4) ( 1.26 10) ( 1.46 17) ( 1.42 11) ( 1.59 26) ( 7.38 16) ( B C D E F G H 105.86R200 6 0.49 32) ( 1.00 26) ( 1.16 25) ( 1.45 20) ( 1.51 1) ( 1.75 8) ( 7.35 17) ( B C D E F G H I 105.49R100 9 0.50 28) ( 1.03 17) ( 1.22 14) ( 1.46 18) ( 1.31 28) ( 1.75 8) ( 7.28 18) ( B C D E F G H I J 104.3ICON 6 0.52 20) ( 1.02 21) ( 1.29 4) ( 1.50 12) ( 1.34 23) ( 1.61 25) ( 7.27 19) ( B C D E F G H I J 104.2Integra 8600 6 0.57 7) ( 1.00 26) ( 1.24 13) ( 1.59 7) ( 1.39 16) ( 1.48 32) ( 7.25 21) ( B C D E F G H I J 104.0Integra 8800 8 0.62 1) ( 1.15 2) ( 1.25 11) ( 1.32 32) ( 1.28 31) ( 1.62 22) ( 7.25 22) ( B C D E F G H I J 103.9UC415 9 0.59 3) ( 1.03 17) ( 1.17 24) ( 1.36 29) ( 1.36 20) ( 1.69 16) ( 7.20 24) ( B C D E F G H I J 103.2SW8421

‐

S 8 0.50 28) ( 1.02 21) ( 1.16 28) ( 1.29 35) ( 1.42 9) ( 1.62 22) ( 7.00 27) ( D E F G H I J K L 100.4Cuf 101 9 0.52 20) ( 1.05 15) ( 1.09 35) ( 1.29 34) ( 1.32 25) ( 1.70 15) ( 6.98 28) ( E F G H I J K L 100.0Integra 8444 RR 4 0.45 36) ( 0.85 35) ( 1.11 31) ( 1.65 2) ( 1.36 19) ( 1.49 31) ( 6.92 30) ( G H I J K L 99.2NuMex Bill Melton 7 0.57 10) ( 0.95 32) ( 1.11 33) ( 1.25 36) ( 1.29 29) ( 1.59 26) ( 6.76 33) ( I J K L 96.94R200 4 0.47 35) ( 0.85 35) ( 1.12 30) ( 1.48 15) ( 1.24 33) ( 1.41 35) ( 6.57 35) ( K L 94.1

Experimental VarietiesSW 8357 8 0.56 11) ( 1.06 12) ( 1.36 1) ( 1.50 12) ( 1.42 9) ( 1.73 10) ( 7.63 4) ( A B C 109.3R89M935 9 0.54 12) ( 1.13 3) ( 1.21 21) ( 1.50 12) ( 1.40 13) ( 1.80 6) ( 7.59 7) ( A B C D 108.8SW 8421

‐

RRS 8 0.52 20) ( 1.11 4) ( 1.22 14) ( 1.57 8) ( 1.47 5) ( 1.69 17) ( 7.59 8) ( A B C D E 108.7SW 8208 8 0.54 12) ( 1.03 17) ( 1.22 14) ( 1.55 9) ( 1.42 11) ( 1.78 7) ( 7.55 10) ( A B C D E F 108.3R88T829 9 0.62 1) ( 1.05 15) ( 1.16 25) ( 1.46 18) ( 1.39 16) ( 1.70 14) ( 7.39 15) ( A B C D E F G H 105.9CW058071 8 0.53 14) ( 1.02 21) ( 1.29 4) ( 1.45 22) ( 1.32 25) ( 1.65 20) ( 7.26 20) ( B C D E F G H I J 104.1UC 2671 9 0.58 6) ( 1.06 12) ( 1.22 20) ( 1.36 30) ( 1.32 25) ( 1.67 18) ( 7.22 23) ( B C D E F G H I J 103.5SW 6334 6 0.57 7) ( 1.06 12) ( 1.21 21) ( 1.41 24) ( 1.40 13) ( 1.48 32) ( 7.13 25) ( B C D E F G H I J K 102.3CW096043 6 0.51 24) ( 1.00 26) ( 1.32 2) ( 1.41 25) ( 1.24 33) ( 1.57 29) ( 7.05 26) ( C D E F G H I J K 101.1Artesian Sunrise 7 0.50 28) ( 0.88 34) ( 1.22 14) ( 1.41 25) ( 1.40 15) ( 1.54 30) ( 6.96 29) ( F G H I J K L 99.8SW 9215

‐

RRS 9 0.48 33) ( 0.98 31) ( 1.12 29) ( 1.41 25) ( 1.28 30) ( 1.64 21) ( 6.91 31) ( G H I J K L 99.0R99T939 8 0.50 27) ( 0.92 33) ( 1.09 34) ( 1.36 30) ( 1.28 31) ( 1.67 19) ( 6.82 32) ( H I J K L 97.7UC2693 9 0.53 19) ( 0.98 30) ( 1.16 25) ( 1.39 28) ( 1.17 35) ( 1.46 34) ( 6.70 34) ( J K L 96.0UC 410 9 0.53 14) ( 1.02 21) ( 1.00 36) ( 1.31 33) ( 1.17 35) ( 1.38 36) ( 6.41 36) ( L 91.8

MEANCVLSD (0.1)

Trial seeded at 25 lb/acre viable seed on Yolo clay loam soil at the Univ. of California Agronomy Farm, Davis, CA.Entries follow ed by the same letter are not signif icantly different at the 10% probability level according to Fishers (protected) LSD.FD = Fall Dormancy reported by seed companies.

6-AprCut 1

29-AprCut 2

27-MayCut 3

30-JunCut 4

3-AugCut 5

8-SepCut 6

TOTALYEAR

Dry t/a

0.5315.45

NS

1.0312.130.15

1.217.400.11

1.4610.900.19

1.3710.450.17

1.6510.760.21

7.267.040.61

Table 4. 2015-2016 YIELDS, UC DAVIS ALFALFA CULTIVAR TRIAL. TRIAL PLANTED 9/30/2014

FDReleased VarietiesUC Impalo 8 10.78 3) ( 7.99 1) ( 9.39 1) ( ADesert Sun 8.10 RR 8 10.79 2) ( 7.68 3) ( 9.23 2) ( A BAmeriStand 803T 8 10.52 8) ( 7.50 11) ( 9.01 6) ( A B C D E8R100 8 10.60 6) ( 7.39 14) ( 8.99 7) ( A B C D E FDG9212 9 10.29 14) ( 7.69 2) ( 8.99 8) ( A B C D E FSW9215 9 10.35 12) ( 7.57 9) ( 8.96 9) ( A B C D E F GUC415 9 10.68 4) ( 7.20 24) ( 8.94 11) ( A B C D E F GAmeriStand 715NT RR 7 10.27 15) ( 7.60 6) ( 8.94 12) ( A B C D E F G6R200 6 10.12 19) ( 7.35 17) ( 8.74 16) ( A B C D E F G H I9R100 9 10.10 20) ( 7.28 18) ( 8.69 17) ( B C D E F G H I JIntegra 8800 8 10.02 21) ( 7.25 22) ( 8.63 19) ( B C D E F G H I JCuf 101 9 10.15 17) ( 6.98 28) ( 8.56 20) ( B C D E F G H I JSW8421

‐

S 8 10.13 18) ( 7.00 27) ( 8.56 21) ( B C D E F G H I JPacif ico 8 9.65 25) ( 7.39 13) ( 8.52 22) ( C D E F G H I JCamas 4 9.40 30) ( 7.62 5) ( 8.51 23) ( C D E F G H I JICON 6 9.70 24) ( 7.27 19) ( 8.48 24) ( D E F G H I JArriba II 6 9.54 28) ( 7.38 16) ( 8.46 25) ( D E F G H I JIntegra 8420 4 9.14 34) ( 7.50 12) ( 8.32 28) ( F G H I J KIntegra 8600 6 9.15 33) ( 7.25 21) ( 8.20 30) ( H I J K LNuMex Bill Melton 7 9.60 27) ( 6.76 33) ( 8.18 31) ( I J K L4R200 4 8.75 35) ( 6.57 35) ( 7.66 35) ( K LIntegra 8444 RR 4 8.28 36) ( 6.92 30) ( 7.60 36) ( L

Experimental VarietiesSW 8208 8 10.81 1) ( 7.55 10) ( 9.18 3) ( A B CR89M935 9 10.58 7) ( 7.59 7) ( 9.08 4) ( A B C DSW 8357 8 10.51 9) ( 7.63 4) ( 9.07 5) ( A B C DSW 8421

‐

RRS 8 10.33 13) ( 7.59 8) ( 8.96 10) ( A B C D E F GUC 2671 9 10.61 5) ( 7.22 23) ( 8.91 13) ( A B C D E F GCW058071 8 10.50 10) ( 7.26 20) ( 8.88 14) ( A B C D E F G HR88T829 9 10.17 16) ( 7.39 15) ( 8.78 15) ( A B C D E F G H IR99T939 8 10.50 11) ( 6.82 32) ( 8.66 18) ( B C D E F G H I JSW 9215

‐

RRS 9 9.84 23) ( 6.91 31) ( 8.37 26) ( E F G H I JUC2693 9 9.97 22) ( 6.70 34) ( 8.34 27) ( E F G H I J KSW 6334 6 9.48 29) ( 7.13 25) ( 8.31 29) ( G H I J KCW096043 6 9.29 31) ( 7.05 26) ( 8.17 32) ( I J K LArtesian Sunrise 7 9.26 32) ( 6.96 29) ( 8.11 33) ( I J K LUC 410 9 9.62 26) ( 6.41 36) ( 8.01 34) ( J K L

MEANCVLSD (0.1)

Trial seeded at 25 lb/acre viable seed on Yolo clay loam at the Univ. of California Agronomy Farm, Davis, CA.Entries follow ed by the same letter are not signif icantly different at the 10% probability level according to Fisher's (protected) LSD.FD = Fall Dormancy reported by seed companies. OCTOBER CUTTING NOT RECORDED (Historical Oct. yield averages approximately 1 t/A

0.86 0.67 0.68

Dry t/a

9.99 7.26 8.627.23 7.71 6.63

2015 2016Yield Yield Average

Table 5. 2016 YIELDS, MODESTO ALFALFA CULTIVAR TRIAL. TRIAL PLANTED 10/9/2014)Note: Single year data should not be used to evaluate alfalfa varieties or choose alfalfa cultivars

% ofCUF 101

FDReleased VarietiesAmeriStand 901TS 9 2.23 1) ( 2.16 1) ( 2.56 2) ( 2.39 2) ( 2.28 2) ( 2.08 1) ( 2.30 1) ( 1.40 1) ( 17.40 1) ( A 114.9Grandslam 8 2.11 4) ( 1.98 6) ( 2.82 1) ( 2.40 1) ( 2.10 5) ( 1.83 5) ( 1.98 8) ( 1.23 4) ( 16.44 2) ( A B 108.5AmeriStand 803T 8 2.13 3) ( 1.97 7) ( 2.24 7) ( 2.27 6) ( 2.22 3) ( 1.96 2) ( 2.21 2) ( 1.31 3) ( 16.30 3) ( A B C 107.6DG9212 9 2.08 5) ( 2.02 2) ( 2.33 4) ( 2.30 4) ( 2.16 4) ( 1.81 8) ( 1.89 18) ( 1.35 2) ( 15.94 5) ( A B C D 105.2Cuf 101 9 1.98 11) ( 1.76 18) ( 2.14 13) ( 2.22 7) ( 2.04 6) ( 1.93 3) ( 1.98 9) ( 1.10 13) ( 15.15 8) ( B C D E F 100.0Integra 8600 6 1.86 17) ( 1.86 10) ( 2.24 8) ( 2.19 9) ( 2.02 7) ( 1.77 13) ( 1.73 30) ( 1.13 11) ( 14.80 11) ( B C D E F 97.7SuperSonic 9 2.01 7) ( 1.98 5) ( 2.31 6) ( 2.07 15) ( 1.72 22) ( 1.67 29) ( 1.86 21) ( 0.83 28) ( 14.44 14) ( D E F G H 95.3Integra 8800 8 1.91 13) ( 1.78 15) ( 1.93 24) ( 2.06 16) ( 1.95 13) ( 1.77 15) ( 1.96 11) ( 1.06 17) ( 14.43 15) ( D E F G H 95.2SW 9106 9 1.84 18) ( 1.68 22) ( 1.96 23) ( 1.93 27) ( 1.93 17) ( 1.79 11) ( 1.99 7) ( 1.04 18) ( 14.15 18) ( E F G H I J 93.4Farm Valley 6 6 1.87 15) ( 1.73 20) ( 2.12 17) ( 2.03 21) ( 1.77 20) ( 1.83 7) ( 1.89 18) ( 0.86 24) ( 14.10 19) ( E F G H I J 93.1Farm Valley 7 7 1.72 25) ( 1.78 16) ( 2.17 10) ( 2.09 14) ( 1.96 11) ( 1.65 31) ( 1.57 34) ( 1.10 13) ( 14.03 20) ( E F G H I J 92.6Pacifico 8 1.77 24) ( 1.66 24) ( 2.10 19) ( 2.02 23) ( 1.96 11) ( 1.79 12) ( 1.60 33) ( 1.07 16) ( 13.97 21) ( E F G H I J K 92.2RR Tonnica 5 1.89 14) ( 1.80 14) ( 2.12 18) ( 2.06 16) ( 1.57 23) ( 1.77 13) ( 1.83 22) ( 0.87 23) ( 13.91 22) ( E F G H I J K L 91.9RR NemaStar 5 1.84 18) ( 1.67 23) ( 2.17 10) ( 2.06 16) ( 1.55 24) ( 1.81 8) ( 1.95 13) ( 0.80 29) ( 13.85 23) ( E F G H I J K L 91.59R100 9 1.87 16) ( 1.47 30) ( 1.82 29) ( 2.03 21) ( 1.24 34) ( 1.68 28) ( 1.90 15) ( 0.73 35) ( 12.75 26) ( H I J K L M N 84.28R100 8 1.65 26) ( 1.55 27) ( 1.84 26) ( 1.90 29) ( 1.42 26) ( 1.60 33) ( 1.74 26) ( 0.93 20) ( 12.64 27) ( I J K L M N 83.4Desert Sun 8.10RR 8 1.48 34) ( 1.61 26) ( 1.84 26) ( 1.88 31) ( 1.34 30) ( 1.67 29) ( 1.90 14) ( 0.85 25) ( 12.56 28) ( J K L M N 82.9Nimbus 5 1.41 36) ( 1.74 19) ( 1.93 24) ( 1.90 29) ( 1.73 21) ( 1.53 35) ( 1.44 36) ( 0.78 32) ( 12.47 29) ( J K L M N 82.3AmeriStand 715NT 7 1.63 28) ( 1.37 35) ( 1.70 34) ( 1.92 28) ( 1.31 31) ( 1.72 20) ( 1.82 23) ( 0.80 29) ( 12.27 30) ( K L M N 81.06R200 6 1.56 29) ( 1.40 33) ( 1.75 32) ( 1.74 36) ( 1.45 25) ( 1.71 23) ( 1.74 26) ( 0.92 21) ( 12.27 31) ( K L M N 81.06829R 8 1.55 31) ( 1.44 31) ( 1.79 30) ( 1.78 33) ( 1.31 31) ( 1.72 20) ( 1.88 20) ( 0.78 33) ( 12.25 32) ( K L M N 80.9Transition 6.1 6 1.56 30) ( 1.44 31) ( 1.77 31) ( 1.94 26) ( 1.39 28) ( 1.53 35) ( 1.74 26) ( 0.84 26) ( 12.22 33) ( L M N 80.7AmeriStand 915TS 9 1.55 32) ( 1.33 36) ( 1.72 33) ( 1.76 35) ( 1.37 29) ( 1.69 26) ( 1.77 24) ( 0.79 31) ( 11.98 34) ( M N 79.1RR Six Shooter 6 1.43 35) ( 1.53 28) ( 1.70 36) ( 1.76 34) ( 1.10 35) ( 1.61 32) ( 1.63 31) ( 0.84 26) ( 11.58 35) ( N 76.5WL662HQ RR 9 1.49 33) ( 1.37 34) ( 1.70 34) ( 1.88 31) ( 1.08 36) ( 1.57 34) ( 1.63 31) ( 0.71 36) ( 11.43 36) ( N 75.5

Experimental VarietiesRD 71 8 2.16 2) ( 1.95 8) ( 2.54 3) ( 2.38 3) ( 2.34 1) ( 1.71 24) ( 2.01 6) ( 1.18 8) ( 16.27 4) ( A B C 107.4SW 1037 10 1.99 9) ( 2.00 3) ( 2.17 10) ( 2.13 13) ( 2.02 7) ( 1.80 10) ( 2.08 5) ( 1.19 7) ( 15.38 6) ( B C D E 101.6CW050085 10 1.94 12) ( 1.84 12) ( 2.14 13) ( 2.18 10) ( 1.99 9) ( 1.85 4) ( 2.11 4) ( 1.13 11) ( 15.18 7) ( B C D E F 100.2CW058071 8 1.84 18) ( 1.81 13) ( 2.21 9) ( 2.21 8) ( 1.95 13) ( 1.73 18) ( 1.96 11) ( 1.22 5) ( 14.93 9) ( B C D E F 98.6RD 121 9 1.99 9) ( 1.89 9) ( 2.33 4) ( 2.29 5) ( 1.99 9) ( 1.68 27) ( 1.57 35) ( 1.17 10) ( 14.90 10) ( B C D E F 98.4SW 8357 8 1.79 23) ( 1.85 11) ( 2.14 13) ( 2.06 16) ( 1.95 13) ( 1.83 5) ( 1.98 9) ( 1.10 15) ( 14.69 12) ( C D E F 97.0RD 132 8 1.99 8) ( 1.99 4) ( 2.14 13) ( 2.15 12) ( 1.79 19) ( 1.73 19) ( 1.74 26) ( 0.94 19) ( 14.49 13) ( D E F G 95.7UC 2671 9 2.03 6) ( 1.78 16) ( 1.98 22) ( 1.96 25) ( 1.83 18) ( 1.72 20) ( 1.90 15) ( 1.20 6) ( 14.40 16) ( D E F G H 95.0UC 2693 9 1.84 21) ( 1.72 21) ( 2.00 21) ( 2.02 23) ( 1.94 16) ( 1.69 25) ( 1.90 15) ( 1.18 8) ( 14.30 17) ( D E F G H I 94.4SW 8421

‐

RRS 8 1.80 22) ( 1.49 29) ( 2.05 20) ( 2.18 10) ( 1.30 33) ( 1.76 16) ( 2.12 3) ( 0.88 22) ( 13.60 24) ( F G H I J K L M 89.8SW 9215-RRS 9 1.65 26) ( 1.66 24) ( 1.84 26) ( 2.05 20) ( 1.42 27) ( 1.76 17) ( 1.77 25) ( 0.78 33) ( 12.93 25) ( G H I J K L M N 85.3

MEANCVLSD (0.1)

Trial seeded at 25 lb/acre viable seed on sandy soil at Stanislaus Farm Supply, Modesto CA.Entries followed by the same letter are not significantly different at the 10% probability level according to Fishers (protected) LSD.FD = Fall Dormancy reported by seed companies.

1.0027.350.29

14.0111.441.71

1.7412.78

NS

1.8615.470.31

2.0614.950.33

1.7414.410.27

Dry t/a

1.8216.900.33

1.7213.660.25

2.0719.490.43

29-AugCut 7

29-SepCut 8

TOTALYEAR

20-JunCut 4

13-JulCut 5

2-AugCut 6

29-MarCut 1

25-AprCut 2

23-MayCut 3

Table 6. 2015-2016 YIELDS, MODESTO ALFALFA CULTIVAR TRIAL. TRIAL PLANTED 10/9/2014

FDReleased VarietiesAmeriStand 901TS 9 15.54 2) ( 17.40 1) ( 16.47 1) ( AGrandslam 8 14.42 12) ( 16.44 2) ( 15.43 2) ( A BPacif ico 8 16.71 1) ( 13.97 21) ( 15.34 3) ( A B CAmeriStand 803T 8 14.14 17) ( 16.30 3) ( 15.22 5) ( A B C D EIntegra 8600 6 15.13 5) ( 14.80 11) ( 14.97 6) ( B C D E FDG9212 9 13.99 21) ( 15.94 5) ( 14.96 7) ( B C D E FSuperSonic 9 14.95 6) ( 14.44 14) ( 14.70 11) ( B C D E F G HFarm Valley 7 7 15.21 4) ( 14.03 20) ( 14.62 13) ( B C D E F G H ICuf 101 9 14.05 20) ( 15.15 8) ( 14.60 14) ( B C D E F G H I JIntegra 8800 8 14.22 14) ( 14.43 15) ( 14.32 16) ( B C D E F G H I J KSW 9106 9 13.80 23) ( 14.15 18) ( 13.98 18) ( C D E F G H I J K L MFarm Valley 6 6 13.46 27) ( 14.10 19) ( 13.78 21) ( F G H I J K L M N8R100 8 14.62 10) ( 12.64 27) ( 13.63 23) ( F G H I J K L M N OTransition 6.1 6 14.85 8) ( 12.22 33) ( 13.54 25) ( H I J K L M N O9R100 9 14.12 18) ( 12.75 26) ( 13.44 26) ( H I J K L M N ORR NemaStar 5 12.67 34) ( 13.85 23) ( 13.26 27) ( I J K L M N ORR Tonnica 5 12.56 35) ( 13.91 22) ( 13.24 28) ( J K L M N ODesert Sun 8.10RR 8 13.68 26) ( 12.56 28) ( 13.12 29) ( K L M N OAmeriStand 715NT RR 7 13.97 22) ( 12.27 30) ( 13.12 30) ( K L M N ONimbus 5 13.41 28) ( 12.47 29) ( 12.94 31) ( L M N O6R200 6 13.13 32) ( 12.27 31) ( 12.70 32) ( L M N ORR Six Shooter 6 13.71 25) ( 11.58 35) ( 12.65 33) ( L M N OAmeriStand 915TS RR 9 13.24 29) ( 11.98 34) ( 12.61 34) ( M N O6829R 8 12.92 33) ( 12.25 32) ( 12.59 35) ( N OWL662HQ RR 9 13.22 31) ( 11.43 36) ( 12.33 36) ( O

Experimental VarietiesRD 71 8 14.20 15) ( 16.27 4) ( 15.23 4) ( A B C DSW 8357 8 15.22 3) ( 14.69 12) ( 14.96 8) ( B C D E F GSW 1037 10 14.51 11) ( 15.38 6) ( 14.95 9) ( B C D E F GCW058071 8 14.92 7) ( 14.93 9) ( 14.92 10) ( B C D E F GCW050085 10 14.06 19) ( 15.18 7) ( 14.62 12) ( B C D E F G H IUC 2671 9 14.78 9) ( 14.40 16) ( 14.59 15) ( B C D E F G H I JUC 2693 9 13.72 24) ( 14.30 17) ( 14.01 17) ( C D E F G H I J K LSW 8421

‐

RRS 8 14.16 16) ( 13.60 24) ( 13.88 19) ( D E F G H I J K L M NRD 132 8 13.22 30) ( 14.49 13) ( 13.86 20) ( E F G H I J K L M NRD 121 9 12.55 36) ( 14.90 10) ( 13.73 22) ( F G H I J K L M NSW 9215-RRS 9 14.24 13) ( 12.93 25) ( 13.59 24) ( G H I J K L M N O

MEANCVLSD (0.1)

Trial seeded at 25 lb/acre viable seed on sandy soil at Stanislaus Farm Supply, CA.Entries follow ed by the same letter are not signif icantly different at the 10% probability level according to Fisher's (protected) LSD.FD = Fall Dormancy reported by seed companies.

1.83 1.69 1.37

Dry t/a

14.09 14.01 14.0512.15 11.30 9.15

2015Yield

2016Yield Average

Table 7. 2016 YIELDS, UC KEARNEY ALFALFA CULTIVAR TRIAL. TRIAL PLANTED 9/18/13Note: Single year data should not be used to evaluate alfalfa varieties or choose alfalfa cultivars

% ofCUF 101

FDReleased VarietiesSaltana 9 2.86 2) ( 1.64 3) ( 2.06 2) ( 2.24 1) ( 1.46 18) ( 1.31 16) ( 1.21 7) ( 0.66 11) ( 13.44 4) ( A B C D 131.16906N 9 2.68 18) ( 1.57 9) ( 1.93 16) ( 2.16 8) ( 1.66 2) ( 1.37 9) ( 1.26 3) ( 0.75 3) ( 13.39 6) ( A B C D 130.56015R 10 2.83 5) ( 1.52 19) ( 1.93 13) ( 2.12 11) ( 1.51 12) ( 1.44 5) ( 1.17 10) ( 0.71 8) ( 13.23 7) ( A B C D E 129.0RRALF 9R100 9 2.83 6) ( 1.61 5) ( 2.06 3) ( 1.98 18) ( 1.42 24) ( 1.28 22) ( 1.17 10) ( 0.67 9) ( 13.00 8) ( A B C D E F 126.8DG 9212 9 2.67 20) ( 1.58 7) ( 1.93 14) ( 2.18 5) ( 1.53 9) ( 1.33 15) ( 1.14 15) ( 0.63 18) ( 13.00 9) ( A B C D E F 126.8Sun Quest 9 2.90 1) ( 1.58 8) ( 1.96 10) ( 2.10 12) ( 1.45 22) ( 1.27 23) ( 1.10 24) ( 0.62 27) ( 12.98 10) ( A B C D E F G 126.6Catalina (EM) 9 2.55 36) ( 1.46 31) ( 1.95 11) ( 2.19 3) ( 1.58 6) ( 1.36 10) ( 1.19 9) ( 0.65 14) ( 12.93 12) ( A B C D E F G H 126.1WL552HQ.RR 10 2.83 3) ( 1.62 4) ( 1.97 7) ( 2.13 10) ( 1.41 25) ( 1.34 13) ( 1.02 39) ( 0.56 38) ( 12.89 13) ( A B C D E F G H I 125.7RRALF 9R100 9 2.72 11) ( 1.47 28) ( 1.96 8) ( 2.08 13) ( 1.52 10) ( 1.35 12) ( 1.07 33) ( 0.65 15) ( 12.83 15) ( A B C D E F G H I J K 125.1SW9628 9 2.58 29) ( 1.53 17) ( 1.94 12) ( 2.13 9) ( 1.50 13) ( 1.28 20) ( 1.13 18) ( 0.62 25) ( 12.72 16) ( B C D E F G H I J K L 124.0Catalina (OGP) 9 2.54 40) ( 1.53 18) ( 1.89 20) ( 2.17 7) ( 1.49 15) ( 1.35 11) ( 1.10 24) ( 0.59 33) ( 12.66 17) ( B C D E F G H I J K L M 123.5WL 662HQ.RR 9 2.73 10) ( 1.45 37) ( 1.87 21) ( 2.06 15) ( 1.46 19) ( 1.39 8) ( 1.08 32) ( 0.60 31) ( 12.65 18) ( B C D E F G H I J K L M 123.3Integra 8800 8 2.61 25) ( 1.47 26) ( 1.84 23) ( 1.90 27) ( 1.51 11) ( 1.46 3) ( 1.14 16) ( 0.60 30) ( 12.55 19) ( B C D E F G H I J K L M 122.46015R 10 2.66 22) ( 1.49 25) ( 1.86 22) ( 1.94 24) ( 1.45 21) ( 1.18 34) ( 1.10 28) ( 0.62 22) ( 12.29 23) ( B C D E F G H I J K L M N O 119.9Ameristand 915TS RR 9 2.72 13) ( 1.52 20) ( 1.62 48) ( 1.98 17) ( 1.40 26) ( 1.24 24) ( 1.15 12) ( 0.64 17) ( 12.28 24) ( B C D E F G H I J K L M N O 119.7SW8421-S 8 2.70 16) ( 1.44 38) ( 1.83 27) ( 1.93 25) ( 1.39 28) ( 1.23 25) ( 1.10 24) ( 0.59 34) ( 12.21 25) ( C D E F G H I J K L M N O 119.1Ameristand 901TS 9 2.53 42) ( 1.52 21) ( 1.93 15) ( 1.83 31) ( 1.46 19) ( 1.16 35) ( 1.10 28) ( 0.63 19) ( 12.16 26) ( D E F G H I J K L M N O 118.6Catalina (OGP+QR) 9 2.34 54) ( 1.45 35) ( 1.84 24) ( 2.07 14) ( 1.46 17) ( 1.29 19) ( 1.14 14) ( 0.55 39) ( 12.15 27) ( D E F G H I J K L M N O 118.5WL 662HQ.RR 9 2.68 19) ( 1.43 41) ( 1.77 33) ( 1.78 38) ( 1.37 31) ( 1.30 18) ( 1.06 35) ( 0.62 26) ( 12.01 28) ( E F G H I J K L M N O P 117.1WL656HQ 9 2.54 37) ( 1.57 9) ( 1.90 18) ( 1.97 20) ( 1.33 39) ( 1.14 38) ( 1.03 38) ( 0.54 41) ( 12.01 29) ( E F G H I J K L M N O P 117.1Ameristand 915TS RR 9 2.63 23) ( 1.45 34) ( 1.84 25) ( 1.78 40) ( 1.33 38) ( 1.21 28) ( 1.10 27) ( 0.65 13) ( 11.99 30) ( E F G H I J K L M N O P Q 117.0Catalina (QR) 9 2.57 30) ( 1.43 40) ( 1.77 33) ( 1.58 50) ( 1.35 36) ( 1.28 21) ( 1.13 18) ( 0.67 10) ( 11.78 32) ( F G H I J K L M N O P Q 114.9AR-370 10 2.52 44) ( 1.45 36) ( 1.79 32) ( 1.72 44) ( 1.33 41) ( 1.13 40) ( 1.11 22) ( 0.59 32) ( 11.63 37) ( H I J K L M N O P Q 113.4Catalina 9 2.44 49) ( 1.46 30) ( 1.83 26) ( 1.82 33) ( 1.36 34) ( 1.08 45) ( 1.02 40) ( 0.62 27) ( 11.63 38) ( H I J K L M N O P Q 113.4WL 550 RR 8 2.70 15) ( 1.49 22) ( 1.71 43) ( 1.81 35) ( 1.29 45) ( 1.09 44) ( 0.94 49) ( 0.53 43) ( 11.56 41) ( J K L M N O P Q R 112.7WL552HQ.RR 10 2.57 31) ( 1.49 23) ( 1.77 35) ( 1.80 36) ( 1.27 49) ( 1.11 41) ( 0.98 44) ( 0.53 42) ( 11.53 42) ( K L M N O P Q R 112.4Supersonic 9 2.49 48) ( 1.46 31) ( 1.77 35) ( 1.83 32) ( 1.34 37) ( 1.15 36) ( 0.93 50) ( 0.46 50) ( 11.43 43) ( L M N O P Q R S 111.5WL 550 RR 8 2.63 24) ( 1.43 42) ( 1.73 41) ( 1.80 37) ( 1.31 42) ( 1.08 47) ( 0.90 54) ( 0.51 45) ( 11.38 47) ( M N O P Q R S T 110.9PGI 908s 9 2.51 46) ( 1.41 44) ( 1.75 39) ( 1.68 46) ( 1.26 51) ( 1.03 50) ( 1.01 41) ( 0.54 40) ( 11.20 49) ( O P Q R S T 109.2Cuf 101 9 2.41 51) ( 1.38 51) ( 1.58 50) ( 1.33 54) ( 1.14 52) ( 1.00 53) ( 0.91 52) ( 0.50 47) ( 10.25 52) ( R S T 100.0Ameristand 445NT 4 2.56 32) ( 1.39 49) ( 1.32 54) ( 1.38 53) ( 1.11 53) ( 0.98 54) ( 0.96 47) ( 0.40 54) ( 10.11 54) ( T 98.6

Experimental VarietiesCW060046 10 2.83 3) ( 1.68 1) ( 2.10 1) ( 2.23 2) ( 1.59 5) ( 1.53 1) ( 1.34 2) ( 0.79 2) ( 14.09 1) ( A 137.4108T813 9 2.66 21) ( 1.67 2) ( 2.01 4) ( 2.18 6) ( 1.63 3) ( 1.45 4) ( 1.24 5) ( 0.71 7) ( 13.56 2) ( A B 132.298T811 9 2.68 17) ( 1.55 12) ( 1.81 29) ( 1.98 19) ( 1.77 1) ( 1.49 2) ( 1.42 1) ( 0.80 1) ( 13.49 3) ( A B C 131.5SW9108 9 2.72 11) ( 1.60 6) ( 1.97 6) ( 2.19 4) ( 1.54 8) ( 1.43 7) ( 1.22 6) ( 0.73 5) ( 13.40 5) ( A B C D 130.7FG 98T812 10 2.82 7) ( 1.54 15) ( 1.80 30) ( 1.91 26) ( 1.59 4) ( 1.31 17) ( 1.26 3) ( 0.75 4) ( 12.97 11) ( A B C D E F G 126.4UC 416 9 2.54 37) ( 1.47 29) ( 1.89 19) ( 2.04 16) ( 1.56 7) ( 1.43 6) ( 1.20 8) ( 0.73 6) ( 12.85 14) ( A B C D E F G H I J 125.3SW9106 9 2.70 14) ( 1.54 13) ( 1.96 9) ( 1.95 21) ( 1.42 23) ( 1.20 29) ( 1.13 20) ( 0.62 23) ( 12.52 20) ( B C D E F G H I J K L M N 122.1SW9107 9 2.60 26) ( 1.53 16) ( 1.90 17) ( 1.95 22) ( 1.49 16) ( 1.21 27) ( 1.11 22) ( 0.63 20) ( 12.43 21) ( B C D E F G H I J K L M N O 121.2SW1037 10 2.41 52) ( 1.49 24) ( 1.99 5) ( 1.89 28) ( 1.50 14) ( 1.33 14) ( 1.14 17) ( 0.61 29) ( 12.36 22) ( B C D E F G H I J K L M N O 120.6UC 418 9 2.59 27) ( 1.41 43) ( 1.75 37) ( 1.82 34) ( 1.38 29) ( 1.18 32) ( 1.13 20) ( 0.66 12) ( 11.92 31) ( E F G H I J K L M N O P Q 116.3AR-380 9 2.54 39) ( 1.40 45) ( 1.72 42) ( 1.95 23) ( 1.36 32) ( 1.23 25) ( 1.00 43) ( 0.51 46) ( 11.71 33) ( F G H I J K L M N O P Q 114.2AR-12 9 2.54 41) ( 1.57 11) ( 1.66 45) ( 1.61 49) ( 1.35 35) ( 1.20 30) ( 1.15 13) ( 0.64 16) ( 11.71 34) ( F G H I J K L M N O P Q 114.2SW8341 8 2.55 35) ( 1.39 47) ( 1.75 38) ( 1.85 30) ( 1.36 33) ( 1.15 37) ( 1.05 36) ( 0.58 35) ( 11.68 35) ( G H I J K L M N O P Q 113.9UC 419 9 2.52 44) ( 1.54 14) ( 1.82 28) ( 1.69 45) ( 1.29 44) ( 1.11 42) ( 1.09 31) ( 0.62 24) ( 11.67 36) ( G H I J K L M N O P Q 113.8UC 101 9 2.49 47) ( 1.39 48) ( 1.79 31) ( 1.88 29) ( 1.40 27) ( 1.18 32) ( 0.97 46) ( 0.53 44) ( 11.62 39) ( H I J K L M N O P Q 113.4FG 106T701 10 2.75 9) ( 1.39 50) ( 1.67 44) ( 1.75 41) ( 1.33 40) ( 1.09 43) ( 1.04 37) ( 0.58 37) ( 11.59 40) ( I J K L M N O P Q 113.1RD121 10 2.81 8) ( 1.43 39) ( 1.66 46) ( 1.78 39) ( 1.27 48) ( 1.07 48) ( 0.95 48) ( 0.45 51) ( 11.43 44) ( L M N O P Q R S 111.5SW7339 7 2.59 28) ( 1.47 26) ( 1.73 40) ( 1.72 43) ( 1.28 46) ( 1.13 39) ( 1.00 42) ( 0.48 48) ( 11.41 45) ( L M N O P Q R S T 111.2UC 417 9 2.53 43) ( 1.46 33) ( 1.64 47) ( 1.72 42) ( 1.30 43) ( 1.03 49) ( 1.10 28) ( 0.63 21) ( 11.40 46) ( L M N O P Q R S T 111.2CW058071 8 2.42 50) ( 1.37 52) ( 1.56 51) ( 1.65 47) ( 1.38 29) ( 1.18 31) ( 1.07 34) ( 0.58 36) ( 11.21 48) ( N O P Q R S T 109.3RD132 8 2.40 53) ( 1.40 46) ( 1.61 49) ( 1.57 51) ( 1.27 47) ( 1.01 52) ( 0.98 45) ( 0.48 49) ( 10.71 50) ( P Q R S T 104.4Vulcan 9 2.56 32) ( 1.36 53) ( 1.47 52) ( 1.62 48) ( 1.26 50) ( 1.08 46) ( 0.93 51) ( 0.41 53) ( 10.68 51) ( Q R S T 104.2NeMex Melton 7 2.56 34) ( 1.31 54) ( 1.36 53) ( 1.44 52) ( 1.10 54) ( 1.02 51) ( 0.90 53) ( 0.42 52) ( 10.11 53) ( S T 98.6

MEANCVLSD (0.1)

Trial seeded at 25 lb/acre viable seed on Hanford f ine sandy loam soil at the Univ. of Calif . Kearney Agricultural Center, Parlier, CA.Entries follow ed by the same letter are not signif icantly different at the 10% probability level according to Fisher's (protected) LSD.FD = Fall Dormancy reported by seed companies. Also, included in this trial w ere plots inoculated w ith 4 seed treatment combinations using alfalfavariety Integra8420. These treatments include: Optimize Gold Plus (OGP), Rhizobia w ith an LCO promoter; An isoflavinoid (EM-09009); and Quick Roots (QR), a microbial seed inoculant.

13-AprCut 1

12-MayCut 2

10-JunCut 3

7-JulCut 4

3-AugCut 5

30-AugCut 6

28-SepCut 7

26-OctCut 8

TOTALYEAR

Dry t/a

2.628.78NS

1.496.870.12

1.8113.410.29

1.8919.110.43

1.4112.940.22

1.2317.850.26

1.0910.440.13

0.6012.540.09

12.129.171.32

Table 8. 2014-2016 YIELDS. UC KEARNEY ALFALFA CULTIVAR TRIAL. TRIAL PLANTED 9/18/2013

FDReleased VarietiesDG 9212 9 14.40 1) ( 12.32 5) ( 13.00 9) ( 13.24 3) ( A B C6906N 9 14.18 2) ( 12.05 10) ( 13.39 6) ( 13.21 4) ( A B C D6015R 10 14.06 5) ( 11.91 15) ( 13.23 7) ( 13.06 6) ( A B C D ESun Quest 9 13.24 27) ( 12.71 3) ( 12.98 10) ( 12.98 7) ( A B C D E FCatalina (OGP) 9 13.93 8) ( 11.96 13) ( 12.66 17) ( 12.85 8) ( A B C D E F GSaltana 9 13.36 22) ( 11.68 22) ( 13.44 4) ( 12.83 10) ( A B C D E F GRRALF 9R100 9 12.94 39) ( 12.40 4) ( 13.00 8) ( 12.78 12) ( A B C D E F G HRRALF 9R100 9 13.37 21) ( 12.01 12) ( 12.83 15) ( 12.73 13) ( A B C D E F G HWL 662HQ.RR 9 14.04 6) ( 11.28 30) ( 12.65 18) ( 12.65 14) ( A B C D E F G HWL552HQ.RR 10 13.78 9) ( 10.97 35) ( 12.89 13) ( 12.55 15) ( A B C D E F G H IAmeristand 901TS 9 13.71 11) ( 11.67 23) ( 12.16 26) ( 12.51 17) ( A B C D E F G H I JWL 662HQ.RR 9 13.16 30) ( 12.27 6) ( 12.01 28) ( 12.48 18) ( A B C D E F G H I J KSW9628 9 13.19 29) ( 11.42 27) ( 12.72 16) ( 12.44 19) ( A B C D E F G H I J K6015R 10 13.35 24) ( 11.68 21) ( 12.29 23) ( 12.44 20) ( A B C D E F G H I J KCatalina (EM) 9 13.36 23) ( 10.89 37) ( 12.93 12) ( 12.39 22) ( A B C D E F G H I J K LAmeristand 915TS RR 9 13.13 32) ( 11.73 18) ( 12.28 24) ( 12.38 23) ( A B C D E F G H I J K LIntegra 8800 8 13.42 19) ( 11.16 31) ( 12.55 19) ( 12.38 24) ( A B C D E F G H I J K LAR-370 10 13.63 15) ( 11.71 19) ( 11.63 37) ( 12.32 25) ( A B C D E F G H I J K LWL 550 RR 8 12.76 46) ( 12.18 8) ( 11.56 41) ( 12.17 28) ( B C D E F G H I J K L MCatalina (QR) 9 13.27 25) ( 11.44 26) ( 11.78 32) ( 12.16 29) ( B C D E F G H I J K L MWL 550 RR 8 13.73 10) ( 11.28 29) ( 11.38 47) ( 12.13 32) ( D E F G H I J K L MAmeristand 915TS RR 9 13.61 16) ( 10.78 40) ( 11.99 30) ( 12.13 33) ( D E F G H I J K L MSW8421-S 8 12.94 38) ( 11.02 33) ( 12.21 25) ( 12.06 37) ( E F G H I J K L MSupersonic 9 12.61 49) ( 11.94 14) ( 11.43 43) ( 11.99 38) ( E F G H I J K L MCatalina (OGP+QR) 9 13.97 7) ( 9.77 49) ( 12.15 27) ( 11.96 39) ( F G H I J K L MWL656HQ 9 12.79 45) ( 11.00 34) ( 12.01 29) ( 11.93 40) ( F G H I J K L MWL552HQ.RR 10 13.05 36) ( 9.97 48) ( 11.53 42) ( 11.52 45) ( I J K L M NCatalina 9 12.24 53) ( 10.48 44) ( 11.63 38) ( 11.45 47) ( J K L M N OPGI 908s 9 13.11 34) ( 9.02 51) ( 11.20 49) ( 11.11 51) ( M N O PCuf 101 9 13.12 33) ( 8.60 53) ( 10.25 52) ( 10.66 52) ( N O PAmeristand 445NT 4 11.71 54) ( 8.85 52) ( 10.11 54) ( 10.22 54) ( PExperimental Varieties108T813 9 12.88 43) ( 13.54 1) ( 13.56 2) ( 13.33 1) ( ASW9108 9 14.08 4) ( 12.25 7) ( 13.40 5) ( 13.24 2) ( A BCW060046 10 13.02 37) ( 12.09 9) ( 14.09 1) ( 13.07 5) ( A B C D EFG 98T812 10 13.49 18) ( 12.03 11) ( 12.97 11) ( 12.83 9) ( A B C D E F GSW9106 9 13.15 31) ( 12.74 2) ( 12.52 20) ( 12.81 11) ( A B C D E F G98T811 9 13.24 28) ( 10.85 39) ( 13.49 3) ( 12.53 16) ( A B C D E F G H I JFG 106T701 10 14.11 3) ( 11.52 25) ( 11.59 40) ( 12.41 21) ( A B C D E F G H I J K LUC 417 9 13.41 20) ( 11.86 17) ( 11.40 46) ( 12.23 26) ( B C D E F G H I J K LUC 416 9 12.45 51) ( 11.37 28) ( 12.85 14) ( 12.22 27) ( B C D E F G H I J K LUC 419 9 12.90 40) ( 11.90 16) ( 11.67 36) ( 12.16 30) ( C D E F G H I J K L MSW1037 10 13.09 35) ( 10.94 36) ( 12.36 22) ( 12.13 31) ( D E F G H I J K L MSW9107 9 12.31 52) ( 11.58 24) ( 12.43 21) ( 12.11 34) ( E F G H I J K L MAR-380 9 12.90 41) ( 11.70 20) ( 11.71 33) ( 12.10 35) ( E F G H I J K L MSW8341 8 13.69 12) ( 10.87 38) ( 11.68 35) ( 12.08 36) ( E F G H I J K L MUC 101 9 12.89 42) ( 11.15 32) ( 11.62 39) ( 11.89 41) ( G H I J K L MAR-12 9 13.25 26) ( 10.68 42) ( 11.71 34) ( 11.88 42) ( G H I J K L MRD121 10 13.69 13) ( 10.26 45) ( 11.43 44) ( 11.79 43) ( G H I J K L MUC 418 9 12.62 48) ( 10.60 43) ( 11.92 31) ( 11.71 44) ( H I J K L M NVulcan 9 13.56 17) ( 10.18 46) ( 10.68 51) ( 11.47 46) ( I J K L M NSW7339 7 12.79 44) ( 10.03 47) ( 11.41 45) ( 11.41 48) ( K L M N OCW058071 8 13.68 14) ( 9.17 50) ( 11.21 48) ( 11.35 49) ( L M N ORD132 8 12.63 47) ( 10.68 41) ( 10.71 50) ( 11.34 50) ( L M N ONeMex Melton 7 12.60 50) ( 8.44 54) ( 10.11 53) ( 10.38 53) ( O P

MEANCVLSD (0.1)Trial seeded at 25 lb/acre viable seed on Hanford f ine sandy loam soil at the Univ. of Calif . Kearney Agricultural Center, Parlier, CA.Entries follow ed by the same letter are not signif icantly different at the 10% probability level according to Fisher's (protected) LSD.FD = Fall Dormancy reported by seed companies. Also, included in this trial w ere plots inoculated w ith 4 seed treatment combinations using alfalfavariety Integra8420. These treatments include: Optimize Gold Plus (OGP), Rhizobia w ith an LCO promoter; An isoflavinoid (EM-09009); andQuick Roots (QR), a microbial seed inoculant.

NS 2.01 1.32 1.09

Yield

12.12 12.19

AverageDry t/a

13.25 11.207.53

2014Yield

2015 2016Yield

8.28 15.19 9.17

Table 9. Westside Salinity Trial 2016. Alfalfa Yield of 7 cuts. Low Salinity TreatmentsYield t/A

Entry Variety 1-Apr 4-May 6-Jun 6-Jul 7-Aug 15-Sep 25-Oct Season Total15 SW 9106 1.81 1.26 2.00 1.76 1.70 1.41 1.25 11.1819 SW 8421- RRS 1.62 1.33 1.86 1.77 1.57 1.22 1.35 10.7318 SW 9215-RRS 1.64 1.39 1.90 1.80 1.48 1.24 1.21 10.6620 CW050085 1.50 1.46 1.84 1.86 1.26 1.19 1.43 10.545 FG R914W259S 1.65 1.32 1.96 1.72 1.42 1.22 1.21 10.4912 Saltana 1.72 1.20 1.53 1.84 1.29 1.25 1.42 10.267 AZ-88NDC 1.62 1.25 1.67 1.56 1.54 1.21 1.33 10.186 AZ- 90NDC-ST 1.53 1.24 2.00 1.65 1.44 1.16 1.14 10.174 FG R814W258S 1.62 1.36 1.80 1.54 1.35 1.22 1.24 10.131 CUF101 1.78 1.32 1.91 1.49 1.33 1.13 1.15 10.112 9R100 1.74 1.25 1.90 1.66 1.33 1.02 1.19 10.099 AmeriStand 901TS 1.70 1.27 1.81 1.68 1.30 1.07 1.19 10.0111 Sun Quest 1.72 1.17 1.88 1.68 1.34 1.12 1.10 10.0114 SW 9813 1.46 1.47 2.00 1.40 1.30 1.14 1.19 9.978 AmeriStand 915TS RR 1.58 1.42 1.75 1.61 1.25 1.09 1.12 9.8121 CW058071 (Impalo) 1.43 1.50 1.78 1.53 1.28 1.06 1.23 9.8113 SW 8421-S 1.56 1.33 1.78 1.50 1.26 1.09 1.08 9.613 FG R814W257S 1.50 1.27 1.72 1.51 1.31 1.11 1.17 9.5810 Desert Sun 8.10RR 1.54 1.28 1.58 1.54 1.23 1.06 1.22 9.4517 SW9812 1.49 1.29 1.54 1.48 1.34 1.07 1.15 9.3616 SW9215 1.38 1.10 1.44 1.31 1.22 0.98 1.24 8.68

Mean 1.60 1.31 1.79 1.61 1.36 1.15 1.22 10.04

CV% 16.9 17.2 22.3 20.8 27.2 21.4 18.0 16.9

LSD (p=0.05) 0.38 0.32 0.57 0.48 0.52 0.35 0.31 2.40

Table 10. Westside Salinity Trial 2016. Alfalfa Yield of 7 cuts. High Salinity TreatmentsYield t/A

Entry Variety 1-Apr 4-May 6-Jun 6-Jul 7-Aug 15-Sep 25-Oct Season Total17 SW9812 1.88 1.69 2.17 1.81 1.25 1.10 1.19 11.0814 SW 9813 1.83 1.75 2.17 1.59 1.10 1.02 1.02 10.493 FG R814W257S 1.67 1.56 2.09 1.45 1.01 1.02 1.44 10.245 FG R914W259S 1.69 1.71 2.18 1.44 1.08 0.90 1.04 10.038 AmeriStand 915TS RR 1.63 1.59 2.17 1.57 0.96 0.97 0.85 9.751 CUF101 1.83 1.60 1.98 1.43 0.89 0.90 0.89 9.5112 Saltana 1.73 1.48 1.93 1.46 0.90 0.87 0.83 9.2119 SW 8421- RRS 1.73 1.52 1.83 1.39 0.98 0.79 0.87 9.109 AmeriStand 901TS 1.65 1.46 1.79 1.44 0.73 0.96 0.91 8.956 AZ- 90NDC-ST 1.57 1.54 1.92 1.27 0.93 0.86 0.83 8.924 FG R814W258S 1.69 1.54 1.88 1.33 0.78 0.76 0.89 8.8716 SW9215 1.70 1.46 1.94 1.56 0.91 0.59 0.69 8.857 AZ-88NDC 1.69 1.46 1.77 1.20 0.68 0.84 0.91 8.542 9R100 1.54 1.49 1.88 1.33 0.67 0.76 0.84 8.5111 Sun Quest 1.65 1.44 1.76 1.27 0.70 0.74 0.75 8.3110 Desert Sun 8.10RR 1.59 1.39 1.78 1.18 0.55 0.71 0.99 8.1920 CW050085 1.55 1.32 1.73 1.24 0.73 0.81 0.75 8.1218 SW 9215-RRS 1.60 1.31 1.70 1.30 0.78 0.74 0.58 8.0221 CW058071 (Impalo) 1.43 1.38 1.77 1.15 0.61 0.75 0.79 7.8915 SW 9106 1.67 1.40 1.74 1.11 0.56 0.79 0.61 7.8713 SW 8421-S 1.44 1.37 1.53 0.94 0.54 0.61 0.60 7.03

Mean 1.65 1.49 1.89 1.36 0.83 0.83 0.87 8.92

CV% 19.57 16.97 19.84 29.50 52.30 47.33 44.27 24.76

LSD (p=0.05) 0.46 0.36 0.53 0.57 0.61 0.56 0.54 3.13

Table 11. Westside Salinity Trial 2016. Comparison on Low and High Salinity Total Alfalfa Yields. Yield t/A Entry Variety Low Salinity (LS) High Salinity (HS) Ave. Relative Yield (HS/LS)

15 SW 9106 11.18 7.87 9.53 70% 19 SW 8421- RRS 10.73 9.10 9.92 85% 18 SW 9215-RRS 10.66 8.02 9.34 75% 20 CW050085 10.54 8.12 9.33 77% 5 FG R914W259S 10.49 10.03 10.26 96%

12 Saltana 10.26 9.21 9.73 90% 7 AZ-88NDC 10.18 8.54 9.36 84% 6 AZ- 90NDC-ST 10.17 8.92 9.55 88% 4 FG R814W258S 10.13 8.87 9.50 88% 1 CUF101 10.11 9.51 9.81 94% 2 9R100 10.09 8.51 9.30 84% 9 AmeriStand 901TS 10.01 8.95 9.48 89%

11 Sun Quest 10.01 8.31 9.16 83% 14 SW 9813 9.97 10.49 10.23 105% 8 AmeriStand 915TS RR 9.81 9.75 9.78 99%

21 CW058071 (Impalo) 9.81 7.89 8.85 80% 13 SW 8421-S 9.61 7.03 8.32 73% 3 FG R814W257S 9.58 10.24 9.91 107%

10 Desert Sun 8.10RR 9.45 8.19 8.82 87% 17 SW9812 9.36 11.08 10.22 118% 16 SW9215 8.68 8.85 8.76 102%

10.04 8.93 89%

SUGGESTED FALL DORMANCY RANGE AND MINIMUM ALFALFA CULTIVAR PEST RESISTANCE RATINGS FOR SIX CALIFORNIA CLIMATE ZONES. Growers selecting varieties from different regions should emphasize the pests that are most important for their area.

Rating Factor

Fall D

oram

ancy

Spotte

d Alfa

lfa A

phid

Pea A

phid

Blue A

lfalfa

Aph

id

Phyto

ptho

ra R

oot R

ot

Bacter

ial W

iltFu

sariu

m Wilt

South

ern A

nthr

acno

se

Stem N

emato

deRoo

t Kno

t Nem

atode

Vertic

illium

Wilt

Production Zone FD SAA PA BAA PRR BW FW An Stn RKN VWIntermountain 2--4 S R MR R R HR R R R RSacramento Valley 4--8 MR HR HR HR MR HR R R R RSan Joaquin Valley 7--9 R HR HR HR MR HR R HR HR RCoastal 5--7 MR HR HR HR MR HR R HR HR RHigh Desert 4--7 R R R R MR HR MR HR HR RLow Desert 8--9 HR HR HR HR S HR HR R HR SNOTE: These pest resistance recommendations were originally developed by Dr. Vern Marble, ExtensionAgronomist, UC Davis, based upon decades of experience with alfalfa varieties in various locations in California.Zones correspond to the principle regions of alfalfa production in California.

Resistance Level Abbreviation Percent resistance1

Highly Resistant HR >51%Resistant R 31-50%Moderately Resistant MR 15-30%Low Resistance LOW 6-14%Susceptible S <5%Tolerant T (see definition)1 Percent of plants in a population resistant to a given pest

Definitions

S - Susceptible -- Damage commonly occurs when in the presence of a specified pest. Inability of a variety to withstand adverse disease or insect conditions.

T - Tolerant -- Ability of plants to sustain yields when confronted with a pest attack or enviornmental condition (e.g. salt or grazing). Tolerant varieties are affected by the condition, but still maintain yields at high levels relative to less tolerant varieties.

EXPLANATION OF PEST RESISTANCE. Alfalfa varieties consist of a population of plants which have varying degrees of resistance to an insect or disease. Since alfalfa fields can sustain considerable loss of individual plants without reducing productivity, alfalfa varieties with 51% or over are considered to be highly resistant, since resistant plants will make up for losses from other plants.

R - Resistant -- The ability of plants to withstand pest attack. Resistance is not absolute but varies by degree. Even highly reistant varieties will have some plants that are susceptible (see above percentages). NOTE: Very high insect populations or very severe disease conditions can overwhelm pest resistance in alfalfa.

I - Immune -- Not subject to attack for a specified pest. Immunity is absolute, and seldom occurs in alfalfa.